2. Season the steaks with salt and pepper. Cook them on the grill to the desired doneness, about 6 minutes per side for medium. Transfer the steaks to a cutting board and slice on the bias.
For the wraps:
3. Meanwhile, in a small mixing bowl, combine the cream cheese, onion and garlic.
4. Lay out the tortillas on a work surface in front of you. Divide the cream cheese mixture among the tortillas and spread it out in the center of the tortillas. Divide the arugula among the tortillas, top with a slice of tomato and a few slices of of steak. Sprinkle with capers. Tightly roll the tortillas into a cylinder ending with the seam on the bottom.
5. Slice the wraps on the diagonal and serve.